/*	Interactive Gravitational Simulator
	Project: IGS Core
	File: Tree.cpp
	Author: Mike Bantegui <mbante2@gmail.com>, Hofstra University 
	Copyright (C) 2012 - 2013 Mike Bantegui

	This file is part of the IGS software package for simulating
	the N-Body problem in real-time. This was developed as part
	of a departmental honors thesis project at Hofstra University
	in the Spring 2012 semester.

	IGS is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	IGS is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

#include "Tree.h"
#include "StringUtils.h"
#include <cassert>
#include <iostream>

namespace IGS
{

template <class T>
Tree *CheckedCreate(const std::string name, const double theta)
{
	Tree *tree = new T(theta);
	assert(ToLower(tree->Name()) == name);
	return tree;
}

// Tries to instantiate a tree by name.
// Returns null if the tree name is invalid.
Tree *CreateTree(std::string name, const double theta)
{
	name = ToLower(name);

	if (name == "kdtree")
		return CheckedCreate<KDTree>(name, theta);
	if (name == "octree")
		return CheckedCreate<Octree>(name, theta);
	if (name == "none")
		return NULL;

	std::cerr << "Tree not recognized: " << name << std::endl;
	return NULL;
}

}